19 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Alma | 1 | 1,248 | 1,183 | 1.38% | 31 | 40 | Township |
| Maple Hill | 2 | 1,193 | 1,159 | 0.34% | 16 | 73 | Township |
| Newbury | 3 | 1,120 | 1,079 | 0.63% | 14 | 78 | Township |
| Alma | 4 | 846 | 808 | 0.83% | 1,446 | 1 | City |
| Maple Hill | 5 | 640 | 632 | 0.16% | 2,634 | 0 | City |
| Plumb | 6 | 614 | 592 | 0.33% | 12 | 50 | Township |
| Wabaunsee | 7 | 600 | 574 | 0.33% | 9 | 66 | Township |
| Wilmington | 8 | 596 | 590 | 0% | 10 | 58 | Township |
| Mission Creek | 9 | 533 | 507 | 0.38% | 7 | 80 | Township |
| Eskridge | 10 | 437 | 437 | 0% | 845 | 1 | City |
| Alta Vista | 11 | 412 | 410 | 0% | 1,181 | 0 | City |
| McFarland | 12 | 280 | 277 | 0% | 1,573 | 0 | City |
| Kaw | 13 | 260 | 248 | 0.39% | 6 | 42 | Township |
| Mill Creek | 14 | 216 | 206 | 0.47% | 3 | 74 | Township |
| Paxico | 15 | 210 | 207 | 0% | 1,448 | 0 | City |
| Harveyville | 16 | 178 | 176 | 0% | 1,319 | 0 | City |
| Farmer | 17 | 78 | 74 | 1.3% | 1 | 66 | Township |
| Newbury | 18 | 51 | 8 | 6.25% | 57 | 1 | CDP |
| Rock Creek | 19 | 50 | 48 | 0% | 1 | 66 | Township |
Alma is the largest city in Wabaunsee County, with a population of 1,248.
Rock Creek is the smallest city in Wabaunsee County, with a population of 50.
There are 19 cities in Wabaunsee County, Kansas.